Module: GeoConcerns::Extractors::Iso19139Helper

Included in:
GeoConcerns::ExternalMetadataFileBehavior
Defined in:
app/models/concerns/geo_concerns/extractors/iso19139_helper.rb

Constant Summary collapse

NS = 
{
  'xmlns:gmd' => 'http://www.isotc211.org/2005/gmd',
  'xmlns:gco' => 'http://www.isotc211.org/2005/gco'
}.freeze

Instance Method Summary collapse

Instance Method Details

#extract_iso19139_metadata(doc) ⇒ Object

TODO: Migrate this code into an XSLT? TODO: Need to support multivalued fields



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# File 'app/models/concerns/geo_concerns/extractors/iso19139_helper.rb', line 11

def extract_iso19139_metadata(doc)
  h = {}
  doc.at_xpath('//gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString', NS).tap do |node|
    h[:title] = [node.text.strip]
  end

  doc.at_xpath('//gmd:identificationInfo/gmd:MD_DataIdentification/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox', NS).tap do |node|
    w = node.at_xpath('gmd:westBoundLongitude/gco:Decimal', NS).text.to_f
    e = node.at_xpath('gmd:eastBoundLongitude/gco:Decimal', NS).text.to_f
    n = node.at_xpath('gmd:northBoundLatitude/gco:Decimal', NS).text.to_f
    s = node.at_xpath('gmd:southBoundLatitude/gco:Decimal', NS).text.to_f
    h[:coverage] = GeoConcerns::Coverage.new(n, e, s, w).to_s
  end

  doc.at_xpath('//gmd:identificationInfo/gmd:MD_DataIdentification/gmd:abstract/gco:CharacterString', NS).tap do |node|
    h[:description] = [node.text.strip]
  end

  doc.xpath('//gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:role/gmd:CI_RoleCode[@codeListValue=\'originator\']', NS).each do |node|
    h[:creator] = begin
                    [node.at_xpath('ancestor-or-self::*/gmd:individualName', NS).text.strip]
                  rescue
                    [node.at_xpath('ancestor-or-self::*/gmd:organisationName', NS).text.strip]
                  end
  end

  # TODO: Not sure if custodian is the same as source
  doc.xpath('//gmd:identificationInfo/gmd:MD_DataIdentification/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:role/gmd:CI_RoleCode[@codeListValue=\'custodian\']', NS).each do |node|
    h[:source] = begin
                   [node.at_xpath('ancestor-or-self::*/gmd:individualName', NS).text.strip]
                 rescue
                   [node.at_xpath('ancestor-or-self::*/gmd:organisationName', NS).text.strip]
                 end
  end

  h
end